Abstract
A wide range of raw materials can be converted into carbon materialsprimarily through chemical and physical activation, or a combination of both. The characteristics of resultant carbon material depend significantly on activation method and the specific raw materials used. This work processes date seed biomass using a chemical activation and thermal annealing method to derive a low-cost and porous carbon material DS-AC@400. The material was then used as a fluorescent sensing probe for selective and precise detection of Hg2+ ions in wastewater. There was a linear correlation between Hg2+ concentration and fluorescence intensity of DS-AC@400 with a limit of detection of 8.69 nM. It was found that the DS-AC@400-based fluorescent sensor has a high selectivity for Hg2+ detection against other interferingmetal ions. The sensor workedeffectively in real water samplesfor practical applications with little interference from interfering ions.
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